function ajax_validate_save_post()
{
// validate
if (!isset($_POST['_acfnonce'])) {
// ignore validation, this form $_POST was not correctly configured
die;
}
// success
if (acf_validate_save_post()) {
$json = array('result' => 1, 'message' => __('Validation successful', 'acf'), 'errors' => 0);
die(json_encode($json));
}
// fail
$json = array('result' => 0, 'message' => __('Validation failed', 'acf'), 'errors' => acf_get_validation_errors());
// update message
$i = count($json['errors']);
$json['message'] .= '. ' . sprintf(_n('1 required field below is empty', '%s required fields below are empty', $i, 'acf'), $i);
// return
die(json_encode($json));
}
function validate_save_post($show_errors = false)
{
// action
do_action('acf/validate_save_post');
// vars
$errors = acf_get_validation_errors();
// bail ealry if no errors
if (!$errors) {
return true;
}
// show errors
if ($show_errors) {
$message = '<h2>' . __('Validation failed', 'acf') . '</h2>';
$message .= '<ul>';
foreach ($errors as $error) {
$message .= '<li>' . $error['message'] . '</li>';
}
$message .= '</ul>';
// die
wp_die($message, 'Validation failed');
}
// return
return false;
}
function ajax_validate_save_post()
{
// bail early if _acfnonce is missing
if (!isset($_POST['_acfnonce'])) {
wp_send_json_error();
}
// vars
$json = array('valid' => 1, 'errors' => 0);
// success
if (acf_validate_save_post()) {
wp_send_json_success($json);
}
// update vars
$json['valid'] = 0;
$json['errors'] = acf_get_validation_errors();
// return
wp_send_json_success($json);
}
function validate_save_post($show_errors = false)
{
// validate fields
if (!empty($_POST['acf'])) {
// loop
foreach ($_POST['acf'] as $field_key => $value) {
// get field
$field = acf_get_field($field_key);
$input = 'acf[' . $field_key . ']';
// bail early if not found
if (!$field) {
continue;
}
// validate
acf_validate_value($value, $field, $input);
}
}
// action for 3rd party customization
do_action('acf/validate_save_post');
// vars
$errors = acf_get_validation_errors();
// bail ealry if no errors
if (!$errors) {
return true;
}
// show errors
if ($show_errors) {
$message = '<h2>Validation failed</h2>';
$message .= '<ul>';
foreach ($errors as $error) {
$message .= '<li>' . $error['message'] . '</li>';
}
$message .= '</ul>';
// die
wp_die($message, 'Validation failed');
}
// return
return false;
}
function customizer_widget_update_callback($instance, $new_instance, $old_instance, $widget)
{
// bail early if not valid
if (!acf_validate_save_post()) {
// vars
$errors = acf_get_validation_errors();
$total = count($errors);
// message
$message = __('Validation failed', 'acf') . '. ';
$message .= sprintf(_n('1 field requires attention.', '%d fields require attention.', $total, 'acf'), $total);
// add missing WP JS to remove spinning
// also set state to 'saved' which disables the save button
$message .= '<script type="text/javascript">';
$message .= '(function($) {';
$message .= '$(".customize-control.previewer-loading").removeClass("previewer-loading"); ';
$message .= 'wp.customize.state("saved").set( true ); ';
$message .= '})(jQuery);';
$message .= '</script>';
// return JSON error
wp_send_json_error(array('message' => $message));
} else {
$instance['acf'] = array('ID' => 'widget_' . $widget->id, 'values' => false, 'reference' => array());
// append acf $_POST data to instance
// this allows preview JS data to contain acf values
$instance['acf']['values'] = $_POST['acf'];
// backup name => key reference
// this will allow the customizer preview to correctly load the field when attempting to run acf_load_value and acf_format_value functions on newly added widgets
foreach ($_POST['acf'] as $k => $v) {
// get field
$field = acf_get_field($k);
// continue if no field
if (!$field) {
continue;
}
// update
$instance['acf']['reference'][$field['name']] = $field['key'];
}
}
// return
return $instance;
}
function ajax_validate_save_post()
{
// validate
if (!isset($_POST['_acfnonce'])) {
// ignore validation, this form $_POST was not correctly configured
die;
}
// success
if (acf_validate_save_post()) {
$json = array('result' => 1, 'message' => __('Validation successful', 'acf'), 'errors' => 0);
die(json_encode($json));
}
// fail
$json = array('result' => 0, 'message' => __('Validation failed', 'acf'), 'errors' => acf_get_validation_errors());
// update message
$i = count($json['errors']);
$json['message'] .= '. ' . sprintf(_n('1 field below is invalid.', '%s fields below are invalid.', $i, 'acf_vf'), $i) . ' ' . __('Please check your values and submit again.', 'acf_vf');
die(json_encode($json));
}
function customizer_widget_update_callback($instance, $new_instance, $old_instance, $widget)
{
// add preview_values reference for later use in load_value filter
// WP will re-generate the widget form HTML, and we need to load the $_POST data, not the DB data
$this->preview_values["widget_{$widget->id}"] = $_POST['acf'];
// add filter
add_filter('acf/load_value', array($this, 'load_value'), 10, 3);
// bail early if not valid
if (!acf_validate_save_post()) {
// vars
$errors = acf_get_validation_errors();
$total = count($errors);
// message
$message = __('Validation failed', 'acf') . '. ';
$message .= sprintf(_n('1 field requires attention.', '%d fields require attention.', $total, 'acf'), $total);
// add missing WP JS to remove spinning
// also set state to 'saved' which disables the save button
$message .= '<script type="text/javascript">';
$message .= '(function($) {';
$message .= '$(".customize-control.previewer-loading").removeClass("previewer-loading"); ';
$message .= 'wp.customize.state("saved").set( true ); ';
$message .= '})(jQuery);';
$message .= '</script>';
// return JSON error
wp_send_json_error(array('message' => $message));
} else {
// append acf $_POST data to instance
// this allows preview JS data to contain acf values
$instance['acf'] = $_POST['acf'];
}
// return
return $instance;
}
function ajax_validate_save_post()
{
// bail early if _acfnonce is missing
if (!isset($_POST['_acfnonce'])) {
wp_send_json_error();
}
// vars
$json = array('message' => __('Validation successful', 'acf'), 'valid' => 1, 'errors' => 0);
// success
if (acf_validate_save_post()) {
wp_send_json_success($json);
}
// update vars
$json['message'] = __('Validation failed', 'acf');
$json['valid'] = 0;
$json['errors'] = acf_get_validation_errors();
// update message
if (count($json['errors']) == 1) {
$json['message'] .= '. ' . __('1 required field below is empty', 'acf');
} else {
$json['message'] .= '. ' . sprintf(__('%s required fields below are empty', 'acf'), count($json['errors']));
}
// return
wp_send_json_success($json);
}